Interesting article, I don’t think I have a use for them though.

How do people do stuff without debuggers? :D

Another way to develop would be through iterating within a Unit Test that you don’t plan to keep around.

Uh, I set a breakpoint and run the app?

To add a bit more context, it’s more difficult to configure a debugger when the application is running within something like Docker. How difficult? That depends on the language and tools you’re using.